| 项目编号: | 1501680
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| 项目名称: | DISSERTATION RESEARCH: Male fitness in a single cell: The evolutionary significance of male reproductive cell morphology |
| 作者: | Robert Cox
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| 承担单位: | University of Virginia Main Campus
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| 批准年: | 2014
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| 开始日期: | 2015-05-01
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| 结束日期: | 2017-04-30
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| 资助金额: | USD20475
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | such cell
; male reproductive cell morphology
; diverse cell type
; male reproductive cell
; male reproductive cell characteristic
; species
; morphology
; selection
; fitness consequence
; trait
; little research
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| 英文摘要: | The goals of this project are to understand how natural selection acts on male reproductive cell characteristics both within and among species. A central aim of evolutionary biology is describing the sources of diversity in traits within and among species. Traits that confer an advantage in securing a mate are often highly diverse. Though historically research has focused on extravagant traits, such as plumage or horn size, relatively little research has focused on such traits directly involved in fertilization. The male reproductive cell is the most diverse cell type among animals, ranging from a few micrometers in some species to 6 cm in length in others, and is central to male reproductive success. Because males of all animal species produce such cells, studying them provides a unique model for exploring how selection shapes the evolution a trait critical for fertilization across the animal kingdom. The project goals will be achieved through a combination of field work, microscopy, and new genomic methods for identifying paternity in a population of nearly two thousand lizards.
My proposed studies will test the hypothesis that the strength and direction of selection on traits within a species will be mirrored in patterns of evolution among species. This project is broken into three aims: 1) testing for correlated evolutionary changes between male reproductive cell morphology and proxies for both pre and post-copulatory selection, 2) measuring phenotypic plasticity and fitness consequences of morphology within a species and 3) measuring selection on morphology, quantity and quality in a wild population. The proposed improvement (aim 3), will allow for the measurement of selection on these traits in a wild population of brown anole lizards using recently developed genomic methods for constructing pedigrees. Together, these projects will integrate microevolutionary processes with macroevolutionary patterns to better understand the evolution of the male gamete. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94756
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Robert Cox. DISSERTATION RESEARCH: Male fitness in a single cell: The evolutionary significance of male reproductive cell morphology. 2014-01-01.
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